Scheduling a No-Wait Hybrid Flowshop in a Real-Time Environment

摘要：

Real-time hybrid flowshop (HFS) scheduling problem with no-wait restriction in process is studied and formulated as an integer programming model. The problem has proven strongly NP-hard. Lagrangian relaxation (LR) is then presented to solve it where a composite subgradient and bundle (CSB) method is designed to update Lagrangian multipliers due to the zigzagging behavior of subgradient optimization. The CSB method performs subgradient optimization in first iterations due to its rapid convergence and runs a bundle method in late iterations accumulating the past subgradients in a bundle to achieve a better searching direction. Computational experiments are performed to show that LR combined with the CSB method converges faster and gives solutions of higher quality than that with subgradient method, especially for large-scale problems.

关键词： Real-time HFS No-wait Lagrangian Relaxation CSB Method

作者: Xuan Hua

作者单位: School of Management Engineering, Zhengzhou University, Zhengzhou, P.R. China, 450001

会议类型: 国际会议

会议名称: The 15th International Conference on Industrial Engineering and Engineering Management(IE&EM2008)(第十五届工业工程与工程管理国际学术会议暨中国机械工程学会第11次工业工程年会)

会议地点: 郑州

会议语种:英文

在线出版日期: 2008-09-20（万方平台首次上网日期，不代表论文的发表时间）